Alright, let's work through 8426 times 9935 step by step
8426 × 9935 = 9935 × (8426)
+ 9935 × 6 giving us 59610
+ 9935 × 20 resulting in 198700
+ 9935 × 400 giving us 3974000
+ 9935 × 8000 that is equal 79480000

= 83712310
